Olesoxime

Olesoxime (TRO19622) is an experimental drug formerly under development by the now-defunct French company Trophos as a treatment for a range of neuromuscular disorders. It has a cholesterol-like structure and belongs to the cholesterol-oxime family of mitochondrial pore modulators. Olesoxime (TRO19622) is an experimental drug formerly under development by the now-defunct French company Trophos as a treatment for a range of neuromuscular disorders. It has a cholesterol-like structure and belongs to the cholesterol-oxime family of mitochondrial pore modulators. In preclinical studies, the compound displayed neuroprotective properties by promoting the function and survival of neurons and other cell types under disease-relevant stress conditions. It did so through interactions with the mitochondrial permeability transition pore (mPTP). A 2009–2011 phase 3 clinical trial of olesoxime in amyotrophic lateral sclerosis did not demonstrate a significant increase in survival versus placebo. However, the results of a 2011–2013 pivotal trial of olesoxime in spinal muscular atrophy (SMA) indicated that the compound may prevent deterioration of muscle function. In 2015, the entire olesoxime programme was purchased by Hoffmann-La Roche for €120 million with a view to developing a treatment for SMA. However, in June 2018, faced with technical and regulatory challenges and competition from a potentially more effective drug nusinersen, Roche halted further development of olesoxime.